TY - RPRT TI - Improving size estimates of open animal populations by incorporating information on age AU - Bryan F.J. Manly AU - Trent L. McDonald AU - Steven C. Amstrup AU - Eric V. Regehr PY - 2003 DO - 10.1641/0006-3568(2003)053[0666:iseooa]2.0.co;2 UR - https://pubs.usgs.gov/publication/70180940 ID - 70180940 ER -